Error- ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion

问题

I am attempting to read a blob message and display it as a variable in one of my procedures, but am getting the error below:

Error - ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: 9923, maximum: 2000)

I have googled and found a suggestion to trim the blob message as below, but would rather display the complete blob message as a string.

UTL_RAW.CAST_TO_VARCHAR2(dbms_lob.substr(variable_name,2000,1)) 

How can I display the complete message? Is there a setting on either the database or procedure level that I can change?

回答1:

I got this worked by using the option described in

http://www.dba-oracle.com/t_convert_blob_varchar_datatype.htm

回答2:

Try to use DBMS_LOB.GETLENGTH(), instead of trimming the string

来源：https://stackoverflow.com/questions/25518780/error-ora-22835-buffer-too-small-for-clob-to-char-or-blob-to-raw-conversion